Add CMake function to gather cmd arguments

[sfod]

Issue #, if available:

When prebuilding dependencies, we need to pass command-line arguments from parent cmake process to child cmake process (e.g. toolchain file or some option). Cmake doesn't provide this functionality out of the box.

Description of changes:

This PR implements a new function that creates a list of variables provided via command line.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.61%. Comparing base (6f20cfb) to head (b107785).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1161   +/-   ##
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  Coverage   83.61%   83.61%           
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  Files          57       57           
  Lines        5946     5946           
=======================================
  Hits         4972     4972           
  Misses        974      974           

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